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3.2.1 KEYPAD OPERATION
The keypad includes two keys that are for menu navigation, a “MENU” key and a “CURSOR”
key. A full set of numeric Data Entry keys, including up and down arrows, simplify operator
entries. A beeper will sound to acknowledge each key press. An error tone will sound for illegal
entries.
While in Remote mode, local data entry is prohibited. However, all system parameters can be
examined.
After one minute of idle time the display will default to the Main.
Menu Key
The “MENU” key allows the operator to switch the context of the LCD between various menus
with ease. This key provides instant access to all pertinent data in both Local and Remote
modes. Sequential menu key actions will show the menus in the following order:
•
Main
•
Alarm
•
Remote
•
Auxiliary
•
Utility (Time, Date, and contrast control)
•
Unit Title
Cursor Key
The ”CURSOR” key cycles through each of the data fields in a given menu. This accommodates
the simple activation of a field within a menu for data entry.
Data Entry Keys
The Data Entry keys allow the operator to enter specific data into an active field. Data is
entered by using the numeric keypad and pressing “ENT”, or by using the up and down arrows
to scroll until the desired setting is displayed and then pressing the “ENT” key. If using the arrow
keys to change attenuation settings, the “ENT” key need not be pressed. Invalid entries will be
ignored and cause an error tone to sound. Any data entry not terminated by pressing the “ENT”
key will expire after ten seconds, an error tone will sound, and the display will be restored to its
prior setting.